Every public service company shall annually furnish to the commission a report in such form as the commission may require, and shall specifically answer all questions propounded to it by the commission. The commission may prescribe the period of time within which all public service companies subject to this title must have, as near as may be, a uniform system of accounts, and the manner in which the accounts must be kept. The detailed report must contain all the required statistics for the period of twelve months ending on the last day of any particular month prescribed by the commission for any public service company. The reports must be made out under oath and filed with the commission at its office in Olympia on a date the commission specifies by rule, unless additional time is granted by the commission. The commission may require any public service company to file monthly reports of earnings and expenses, and to file periodical or special reports, or both, concerning any matter the commission is authorized or required, by this or any other law, to inquire into or keep itself informed about, or which it is required to enforce, the periodical or special reports to be under oath whenever the commission so requires.
[2007 c 234 § 5; 1989 c 107 § 2; 1961 c 14 § 81.04.080. Prior: 1911 c 117 § 78, part; RRS § 10416, part.]